{"product_id":"ball-peen-mica-perky-box-thumbnail-specimen-branchville-connecticut","title":"Muscovite var. Ball Peen Mica | Perky Box Specimen | Rare | Branchville, Connecticut","description":"\u003cp\u003e\u003cspan\u003eThis is a natural \"Ball Peen\" Mica specimen from Branchville, Connecticut.  Instead of forming flat, book-like sheets as muscovite usually does, mica specimens from the Branchville Mica Mine develop a rounded, bulbous termination resembling the rounded end of a ball-peen hammer, from which its name is derived.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan\u003eThe Branchville Mica Mine, which has been inactive since 1944 and is mostly flooded, is one of the most historically important mineral localities in the United States. Opened in the 1870s as a mica mine, it quickly became internationally recognized for its scientific significance after Yale University mineralogists discovered an exceptional variety of rare minerals within its pegmatite. The quarry served as the type locality for several newly identified mineral species and played a key role in advancing the study of pegmatites and mineral formation. \u003cmeta charset=\"utf-8\"\u003eIt is especially famous for producing the distinctive \"ball-peen\" muscovite crystals, along with fine specimens of beryl, spodumene, and other rare minerals. \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003eThis classic specimen from Connecticut will come protected in a Perky Box.   The box will show its age but is just another way to show how old the specimen is.  The original label when the specimen was catalogued is also a nice touch.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eName:\u003c\/strong\u003e  Mica\u003cbr\u003e\u003cstrong\u003eSpecimen Size\u003c\/strong\u003e: \u003cspan\u003e Miniature\u003c\/span\u003e\u003cspan\u003e-Sized  \u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003cspan\u003e:  33x19x16 mm \/ 1.3x0.7x0.6\u003c\/span\u003e\u003cspan\u003e  \u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003cspan\u003e:  10.9 Grams \/  0.4 Ounces\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cb\u003eOrigin\u003c\/b\u003e: Mined in Fillow Quarry, Branchville, Redding, Fairfield County, Connecticut, USA\u003c\/span\u003e\u003c\/p\u003e","brand":"Canagem.com","offers":[{"title":"Default Title","offer_id":47875068428541,"sku":"02-01079","price":157.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0053\/3309\/0374\/files\/20260723_104916.jpg?v=1784839518","url":"https:\/\/canagem.com\/products\/ball-peen-mica-perky-box-thumbnail-specimen-branchville-connecticut","provider":"Canagem.com","version":"1.0","type":"link"}